A kind of self-curing tundish dry material and preparation method thereof

A self-curing and auxiliary material technology, applied in the field of refractory materials, can solve the problems of not meeting the requirements of clean steel production, long baking time, and reducing the quality of steel billets, so as to solve the pollution problem and the hidden safety hazards and corrosion resistance of gas baking. Excellent, convenient and quick construction effect

Active Publication Date: 2022-07-19
北京联合荣大工程材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] From the perspective of raw materials, traditional dry vibrating materials use phenolic resin as a binder, and the market price is high, which makes the operation of tundish production always in a state of high cost
Judging from the actual situation of each continuous casting tundish construction site, there are several problems in the traditional dry vibrating material, such as the need for baking during the forming process of the dry material, the baking time is long (about 2 to 4 hours), the gas consumption is huge and the There are hidden dangers to personal safety, toxic and harmful substances are easily produced during baking, the site environment is seriously polluted, human health is endangered, and the labor intensity of workers is high. Moreover, when traditional dry vibrating materials are used in tundishes, the residual carbon and hydrogen produced by phenolic resin will give The impact of clean molten steel, thereby reducing the quality of steel billets, does not meet the production requirements of clean steel

Method used

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  • A kind of self-curing tundish dry material and preparation method thereof
  • A kind of self-curing tundish dry material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0038] The present invention relates to a kind of tundish dry-type material, which is prepared from the following components:

[0039] 90 parts of magnesia, 10 parts of forsterite, 10 parts of magnesia brick crushing material, 3 parts of Guangxi white mud, 0.15 parts of explosion-proof agent aluminum lactate, 5 parts of compound binder;

[0040] The composite binding agent includes 2 parts of maleic acid, 2 parts of citric acid, and 1 part of calcium chloride.

[0041] The tundish dry feed of the present invention is prepared by the following method:

[0042] 1) Stir the above components according to the proportions for 5-10 minutes until the mixture is uniform to obtain a dry, loose and uniform self-curing tundish dry bulk material, which is bagged and sealed.

[0043] 2) Pour the bulk material into the mixer to add water and stir, and the mixed dry material is transported to the tundish and vibrated to make it evenly filled and covered with the working layer, and placed on ...

Embodiment 2

[0045] The present invention relates to a kind of tundish dry feed, which is prepared from the following components:

[0046] 60 parts of magnesia, 10 parts of forsterite, 30 parts of magnesia brick crushing material, 5 parts of Guangxi white mud, 0.15 parts of explosion-proof agent aluminum lactate, 4.8 parts of compound binder;

[0047] The composite binder includes 2 parts of tartaric acid, 2 parts of oxalic acid, and 0.8 part of magnesium sulfate.

Embodiment 3

[0049] The present invention relates to a kind of tundish dry-type material, which is prepared from the following components:

[0050] 58 parts of magnesia, 35 parts of forsterite, 10 parts of magnesia brick crushing material, 3 parts of Guangxi white mud, 2 parts of composite binder, 0.15 parts of explosion-proof agent and explosion-proof fiber;

[0051] The composite binder includes 0.5 part of oxalic acid, 0.5 part of p-toluenesulfonic acid, and 1 part of aluminum chloride.

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Abstract

The invention belongs to the technical field of refractory materials, and particularly relates to a self-curing tundish dry-type material and a preparation method thereof. The tundish dry material of the present invention is prepared from the following components: in the main material, 50-95 parts of magnesia, 10-40 parts of forsterite, and 10-40 parts of magnesia brick crushing material; auxiliary materials, including explosion-proof agent 0.1 to 1 part, Guangxi white mud 0.5 to 5 parts; the binding agent is 2 to 8 parts of a composite binding agent. By optimizing the composition of the binder, the present invention can replace the traditional phenolic resin, improve the environmental protection performance of the material, and further optimize the main material to realize the self-curing of the dry material, and cancel the work during the construction of the traditional dry material. The layer belt mold baking process saves time and cost, reduces site safety hazards, reduces energy consumption, and is easier to operate, more energy-saving and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and particularly relates to a self-curing tundish dry-type material and a preparation method thereof. Background technique [0002] With the development of clean steel production technology and the continuous improvement of the quality requirements for steel billets, the tundish has evolved into the terminal equipment for molten steel refining. Its main functions are two, one is to refine molten steel, and the other is to eliminate non-metallic inclusions . In order to realize the metallurgical function of the tundish, it is required that the working layer refractory used in the tundish has the characteristics of longevity and cleanliness. [0003] The development of the tundish working layer refractory has roughly gone through four stages, which have appeared successively: no working lining, thermal insulation board, smearing material and traditional dry vibrating material. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/043C04B35/622B28B1/087B28B11/24
CPCC04B35/043C04B35/62204B28B1/087B28B11/243
Inventor 董战春邓乐锐赵金秋秦颖王丽丽秦文鹏
Owner 北京联合荣大工程材料股份有限公司
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